Ten people were seriously injured, two of whom were trapped inside, when an explosion caused a section of roof to collapse at a Chicago water reclamation plant on Thursday, authorities said.
Firefighters pulled one person out shortly after the collapse at the one-story brick building on Chicago's far South Side.
It took about two hours to rescue the second person, who was 'buried and entombed' by fallen debris, Chicago Fire Commissioner Jose Santiago said.
The other people who were injured were taken to hospitals in serious-to-critical condition, Fire Department spokesman Larry Merritt said.
Authorities said they are investigating whether the explosion was caused by a buildup of methane, a byproduct of the water treatment process.
... To Read more, please click here